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bug#4547: a bug: emacs 23.1: very large font
From: |
Kenichi Handa |
Subject: |
bug#4547: a bug: emacs 23.1: very large font |
Date: |
Thu, 01 Oct 2009 10:26:04 +0900 |
In article
<487180556.521141253786336982.JavaMail.root@zmail04.collab.prod.int.phx2.redhat.com>,
Daniel Novotny <dnovotny@redhat.com> writes:
> the bug report implies that the problem here is that emacs is scaling the
> requested font size according to
> the display resolution reported by Xorg. These are accurate for the
> dimensions of the screen, but that
> doesn't mean emacs should use them to change the font sizes the user
> requested:
> see https://bugzilla.redhat.com/show_bug.cgi?id=517272#c3
That bug report says:
> eg, my laptop display reports xdpyinfo
>
> dimensions: 1600x1200 pixels (304x228 millimeters)
> resolution: 134x134 dots per inch
>
> while my external monitor report
>
> dimensions: 1680x1050 pixels (514x321 millimeters)
> resolution: 83x83 dots per inch
>
> Now both of these are accurate for the dimensions of the screen, but that
> doesn't mean emacs should use them to change the font sizes the user requested
>
> > For example, using my laptop display
> >
> > - Go to the menu 'Options -> Set Default Font'.
> > - Select 'DejaVu Sans Mono, Book, 12pt'
> > - In a buffer, move cursor over a letter, and type 'c-u c-x =', and it
> > displays
> >
> > xft:-unknown-DejaVu Sans-normal-normal-normal-*-22-*-*-*-*-0-iso10646-1
> > (#x50)
>
> ie, so when user requested requested 12pt, and emacs instead gave them 22pt
At least, this bug report confuses point and pixelsize. In
the above case, Emacs selected "22-pixelsize" font, not
"22-point" font. And, on 134 DPI screen, 22-pixel is
12-point (3.4mm). So, it should be the correct size the
user requested by saying "12pt".
If one wants a font of 12-pixelsize, do something like:
ESC : (set-default-font "dejavu sans mono:pixelsize=12") RET
---
Kenichi Handa
handa@m17n.org